Annular heat dissipating device

ABSTRACT

An annular heat dissipating device, comprises an annular body; a periphery of the annular body being formed with a plurality of trenches and recesses; which are alternatively arranged. an inner middle area of the annular body having a seat plate for installing at least one heat source; a plurality of heat dissipated fins being arranged in the recesses which are annularly arranged around an outer periphery of the annular body; each fin being inserted into the recess. In assembly by punching, a shaping mold punches a trench between two fins so that two lateral wall of the trench will be pressed and deform; and then the fin in the recess tightly adheres to the outer periphery of the annular body.

FIELD OF THE INVENTION

The present invention relates to heat dissipation devices, in particular to an annular heat dissipating device, in that an annular body has an integral formed seat. A heat source is installed to a seat plate. The structure of the present invention is beneficial for punching in the installation of the fins to the annular body. In punching, a shaping mold will punch a trench between two fins so as to extrusion the material to tighten the fin to the annular body.

BACKGROUND OF THE INVENTION

With the improvement of electronic products, the power consumed becomes larger and thus heat generated increases. To remove the heat effectively is an important problem so as to retain the stability of the system.

Currently, light emitting diodes have replaced the conventional lighting sources, such as tungsten silks, fluorescent lights, etc. The LEDs have compact sizes and can provide different lights so as to suit for the electric operation panels, information panels, communication panels, etc. Furthermore, LEDs are used in lamps, such as table lamps, load lamps, etc. However if too many LEDs are concentrated in a small area or light power LEDs are used, heat dissipated will become greater.

In one prior art, high power LEDs are connected to a bottom of heat dispersion device so that heat from LEDs is transferred to a flat shape heat tube or is embedded to an evaporated area of a heat tube in a metal tubes so that heat in the heat tube is transferred to various areas by the vapors in the tubes through heat convection. However the structure is complicated and is not practical.

Besides, in another prior art, a heat dissipating module is formed by heat dissipating fins and heat conductive bars. The fins are at the top ends of the bars as a concave area. The seat for placing LEDs is placed in the concave area. Welding is sued in the shaping the heat dissipating device. The manufacturing speed is low and some defects are formed in the heat dissipating device. Welding operation will generate harmful air, which is dangerous to human body and environment.

SUMMARY OF THE INVENTION

Accordingly, the primary object of the present invention is to provide an annular heat dissipating device, in that an annular body has an integral formed seat. A heat source is installed to a seat plate. A plurality of fins are arranged around the annular body. The present invention is suitable for light emitting diodes, integrated circuits, or other electronic heat emitting elements.

Another object of the present invention is that the heat dissipating device has a tightly engaged structure. The structure of the present invention is beneficial for punching in the installation of the fins to the annular body. In punching, a shaping mold will punch a trench between two fins so as to extrusion the material to tighten the fin to the annular body.

To achieve above object, the present invention provides an annular heat dissipating device, comprising: an annular body; a periphery of the annular body being formed with a plurality of trenches and recesses; which are alternatively arranged. an inner middle area of the annular body having a seat plate for installing at least one heat source; a plurality of heat dissipated fins being arranged in the recesses which are annularly arranged around an outer periphery of the annular body; each fin being inserted into the recess. In assembly by punching, a shaping mold punches a trench between two fins so that two lateral wall of the trench will be pressed and deform; and then the fin in the recess tightly adheres to the outer periphery of the annular body.

The seat plate is installed in a bottom of an opening at a middle portion of the annular body. The seat plate is installed in a lateral wall of an opening at a middle portion of the annular body. The seat plate is integrally formed on the inner wall. The seat plate is installed in an opening of the annular body. Each fin has an upper detaching seat and a lower detaching seat; when the fins are assembled to the annular seat; the fin is formed in order with a predetermined distance. An annular body has one of a round shape, an elliptical shape, a flat annular shape, or an annular body with a sealing opening. The heat source is an electronic heat dissipating element. The heat source is one of a light emitting diode and an integrated circuit.

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is an assembled perspective view of the present invention.

FIG. 3 is an assembled cross sectional view of the present invention.

FIG. 4 is a schematic view showing the punching operation of the present invention.

FIG. 5 is a schematic view showing the tightening punching operation of the present invention.

FIG. 6 is a perspective view of the annular heat dissipating according to the present invention.

FIG. 7 is an elevation view of FIG. 6.

FIG. 8 shows the embodiment of the present invention, where the seat plate is installed within the annular body.

FIG. 9 shows another embodiment of the present invention, where the seat plate is installed within the annular body.

DETAILED DESCRIPTION OF THE INVENTION

In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims.

Referring to FIG. 1 to 3, a tightening assembly of a heat dissipater with an annular body includes the following elements.

An annular body 10 has a round shape, an elliptical shape, a flat annular shape, or an annular body with a sealing opening. In this embodiment, the annular body 10 has a round shape. A periphery of the annular body 10 is formed with a plurality of trenches and recesses 12 which are alternatively arranged. An inner middle area of the annular body 10 has a seat plate 13 for installing light emitting bodies, integrated circuits, or other heat dissipated electronic device (not shown).

A plurality of heat dissipated fins 20 are arranged in the recesses 12 which are annularly arranged around an outer periphery of the annular body 10. Each fin 20 is inserted into the recess 12.

In assembly, by punching, a shaping mold 30 punches a trench 20 between two fins 20. Two lateral wall of the trench 20 will be pressed and deform. Then the fin 20 in the recess 12 tightly adheres to the outer periphery of the annular body 10.

Further referring to FIG. 3, each fin 20 is arranged around the annular body 10 in order. Each fin 20 has an upper detaching seat 21 and a lower detaching seat 22. When the fins 20 are assembled to the annular seat 10. The fin 20 is formed in order with a predetermined distance so that the shaping mold 30 can be punched conveniently. The fins 20 provide large space for contacting with air. A heat source is installed on the seat plate 13 in the annular body 10. In FIG. 2, the fins 20 are inserted into the recesses 12 of the annular body 10. At this time, the annular body 10 and the fins 20 are not punched.

Referring to FIG. 4, the punching operation about the shaping mold 30 of the present invention is illustrated. The annular body 10 is pressed and deform. At the same time, each fin 20 is extruded by the trenches 11 at two sides of the fin 20 so that the fins 20 are tightly engaged in the recesses 12 (as shown in FIG. 5). Thus the annular body and the fins 20 are tightly engaged as an integral body. After punching and shaping, the assembly of the fins 20 and the annular body 10 are illustrated in FIGS. 6 and 7.

The features of the present invention is that the assembly is easily performed by punching molds. No welding operation is necessary and thus manual faults are reduced. Referring to FIGS. 6 and 7, the perspective view and elevation view of the annular body with fins are illustrated. It is known from the drawing, the fins 20 are tightly combined with the recesses 12 of the annular body 10 by riveting. The seat plate 13 serves to install heat sources, such as light emitting diodes or other electric or electronic elements. The fins 20 provide higher heat dissipating effect.

Referring to FIGS. 7 and 8, the seat 13 in the annular body 19 is not limited to be placed at a middle position, but it can be installed at an inner wall of the annular body 10, or as illustrated in FIG. 9, the set plate 13 is installed at an opening of the annular body so as to enable the heat source to be installed at different position. The heat is dissipated by fins 20.

The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. 

1. An annular heat dissipating device, comprising: an annular body; a periphery of the annular body being formed with a plurality of trenches and recesses; which are alternatively arranged. an inner middle area of the annular body having a seat plate for installing at least one heat source; a plurality of heat dissipated fins being arranged in the recesses which are annularly arranged around an outer periphery of the annular body; each fin being inserted into the recess; wherein in assembly by punching, a shaping mold punches a trench between two fins so that two lateral wall of the trench will be pressed and deform; and then the fin in the recess tightly adheres to the outer periphery of the annular body.
 2. The annular heat dissipating device as claimed in claim 1, wherein the seat plate is installed in a bottom of an opening at a middle portion of the annular body.
 3. The annular heat dissipating device as claimed in claim 1, wherein the seat plate is installed in a lateral wall of an opening at a middle portion of the annular body.
 4. The annular heat dissipating device as claimed in claim 3, wherein the seat plate is integrally formed on the inner wall.
 5. The annular heat dissipating device as claimed in claim 1, wherein the seat plate is installed in an opening of the annular body.
 6. The annular heat dissipating device as claimed in claim 1, wherein each fin has an upper detaching seat and a lower detaching seat; when the fins are assembled to the annular seat; the fin is formed in order with a predetermined distance.
 7. The annular heat dissipating device as claimed in claim 1, wherein an annular body has one of a round shape, an elliptical shape, a flat annular shape, or an annular body with a sealing opening.
 8. The annular heat dissipating device as claimed in claim 1, wherein the heat source is an electronic heat dissipating element.
 9. The annular heat dissipating device as claimed in claim 1, wherein the heat source is one of a light emitting diode and an integrated circuit. 